The adsorption of four n-alkanes (n-C, to n-C,,) and of mesitylene on water-swollen cotton cellulose has been studied by gas chromatography. From the adsorption isotherms, the relative retention of the solutes and the thermodynamic functions of adsorption at zero surface coverage, it was found that the surface properties of the gel-like system were unaffected by the quantity of water between ca. 20% and 220% by weight. The adsorptive properties of the insoluble hydrocarbons on the water~ellulose phase indicated a low-energy surface which, however, differed markedly from bulk water. The London force contribution to the surface free energy of cellulose as a function of water content was also studied. Over ca. 20% by weight of water, the value of this London Component remains constant at 34 mN m-'. This is significantly larger than the value of 22 m N m-I for bulk water. Some tentative explanations for this difference are given.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.